对以去离子水为工质的过热气流过电加热的环形狭缝进行了换热试验研究 .试验结果表明 :环形狭缝中的过热气热交换参数与普通圆管有着显著的不同 ,随着狭缝间隙的减小 ,狭缝中的换热得到了增强 ;当内、外管热流密度相等时 ,内管换热系数大于外管换热系数 ,并且此时环形狭缝的换热能力最强 .应用试验结果和多元线性回归方法 ,拟合出适合试验数据的经验关系式 . The heat transfer experiments on toroidal slit heated with deionized water as working fluid were carried out.The experimental results show that the parameters of superheated gas exchange in annular slits are significantly different from those of ordinary tubes, When the inner and outer tubes have the same heat flux density, the heat transfer coefficient of the inner tube is larger than the heat transfer coefficient of the outer tube, and the heat transfer capacity of the annular slit is the most Empirical test results and multiple linear regression methods fit the experimental data fit empirical relationship.